./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 12:52:10,217 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-12-02 12:52:10,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2023-12-02 12:52:10,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 12:52:10,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 12:52:10,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 12:52:10,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 12:52:10,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 12:52:10,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 12:52:10,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 12:52:10,320 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-12-02 12:52:10,321 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 12:52:10,321 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-12-02 12:52:10,322 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 12:52:10,322 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-12-02 12:52:10,323 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-12-02 12:52:10,323 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 12:52:10,324 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2023-12-02 12:52:10,325 INFO L153 SettingsManager]: * Interval Domain=false
[2023-12-02 12:52:10,325 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 12:52:10,326 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2023-12-02 12:52:10,326 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC
[2023-12-02 12:52:10,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 12:52:10,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-12-02 12:52:10,328 INFO L153 SettingsManager]: * sizeof long=4
[2023-12-02 12:52:10,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-12-02 12:52:10,329 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-12-02 12:52:10,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-12-02 12:52:10,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 12:52:10,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 12:52:10,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 12:52:10,331 INFO L153 SettingsManager]: * sizeof long double=12
[2023-12-02 12:52:10,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-12-02 12:52:10,332 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-12-02 12:52:10,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 12:52:10,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 12:52:10,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-12-02 12:52:10,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 12:52:10,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 12:52:10,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 12:52:10,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 12:52:10,336 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 12:52:10,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 12:52:10,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 12:52:10,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 12:52:10,337 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-12-02 12:52:10,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 12:52:10,337 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5
[2023-12-02 12:52:10,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 12:52:10,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 12:52:10,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 12:52:10,615 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-12-02 12:52:10,616 INFO L274 PluginConnector]: CDTParser initialized
[2023-12-02 12:52:10,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:13,428 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-12-02 12:52:13,604 INFO L384 CDTParser]: Found 1 translation units.
[2023-12-02 12:52:13,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:13,614 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/04446049d/94b9fd5f1e654a92835f3b23d12a3e9e/FLAG2e3cf0a6b
[2023-12-02 12:52:13,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/04446049d/94b9fd5f1e654a92835f3b23d12a3e9e
[2023-12-02 12:52:13,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 12:52:13,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 12:52:13,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 12:52:13,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 12:52:13,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 12:52:13,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:13,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4469a1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13, skipping insertion in model container
[2023-12-02 12:52:13,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:13,675 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-12-02 12:52:13,858 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010]
[2023-12-02 12:52:13,865 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379]
[2023-12-02 12:52:13,912 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 12:52:13,924 INFO L202 MainTranslator]: Completed pre-run
[2023-12-02 12:52:13,941 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010]
[2023-12-02 12:52:13,943 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379]
[2023-12-02 12:52:13,974 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 12:52:13,988 INFO L206 MainTranslator]: Completed translation
[2023-12-02 12:52:13,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13 WrapperNode
[2023-12-02 12:52:13,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 12:52:13,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 12:52:13,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 12:52:13,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 12:52:13,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,030 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169
[2023-12-02 12:52:14,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 12:52:14,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 12:52:14,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 12:52:14,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 12:52:14,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 12:52:14,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 12:52:14,069 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 12:52:14,069 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-12-02 12:52:14,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (1/1) ...
[2023-12-02 12:52:14,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 12:52:14,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 12:52:14,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 12:52:14,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 12:52:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 12:52:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2023-12-02 12:52:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2023-12-02 12:52:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 12:52:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 12:52:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 12:52:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-12-02 12:52:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-12-02 12:52:14,220 INFO L241 CfgBuilder]: Building ICFG
[2023-12-02 12:52:14,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 12:52:14,626 INFO L282 CfgBuilder]: Performing block encoding
[2023-12-02 12:52:14,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 12:52:14,798 INFO L309 CfgBuilder]: Removed 2 assume(true) statements.
[2023-12-02 12:52:14,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:52:14 BoogieIcfgContainer
[2023-12-02 12:52:14,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 12:52:14,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 12:52:14,803 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 12:52:14,807 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-12-02 12:52:14,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:52:13" (1/3) ...
[2023-12-02 12:52:14,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e616335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:52:14, skipping insertion in model container
[2023-12-02 12:52:14,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:13" (2/3) ...
[2023-12-02 12:52:14,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e616335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:52:14, skipping insertion in model container
[2023-12-02 12:52:14,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:52:14" (3/3) ...
[2023-12-02 12:52:14,810 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:14,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 12:52:14,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-12-02 12:52:14,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 12:52:14,879 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@959741b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 12:52:14,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-12-02 12:52:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-12-02 12:52:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-12-02 12:52:14,889 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 12:52:14,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-12-02 12:52:14,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 12:52:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 12:52:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 9363373, now seen corresponding path program 1 times
[2023-12-02 12:52:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 12:52:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605965009]
[2023-12-02 12:52:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 12:52:14,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 12:52:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-02 12:52:14,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-02 12:52:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-02 12:52:15,028 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2023-12-02 12:52:15,030 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-12-02 12:52:15,032 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2023-12-02 12:52:15,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2023-12-02 12:52:15,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-02 12:52:15,040 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-12-02 12:52:15,045 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-12-02 12:52:15,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:52:15 BoogieIcfgContainer
[2023-12-02 12:52:15,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-02 12:52:15,064 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-12-02 12:52:15,064 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-12-02 12:52:15,065 INFO L274 PluginConnector]: Witness Printer initialized
[2023-12-02 12:52:15,065 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:52:14" (3/4) ...
[2023-12-02 12:52:15,068 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-12-02 12:52:15,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-12-02 12:52:15,071 INFO L158 Benchmark]: Toolchain (without parser) took 1439.38ms. Allocated memory is still 140.5MB. Free memory was 99.4MB in the beginning and 70.3MB in the end (delta: 29.1MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB.
[2023-12-02 12:52:15,072 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-12-02 12:52:15,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.11ms. Allocated memory is still 140.5MB. Free memory was 99.1MB in the beginning and 84.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-12-02 12:52:15,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.25ms. Allocated memory is still 140.5MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-12-02 12:52:15,074 INFO L158 Benchmark]: Boogie Preprocessor took 36.49ms. Allocated memory is still 140.5MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-12-02 12:52:15,075 INFO L158 Benchmark]: RCFGBuilder took 731.25ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 85.0MB in the end (delta: -4.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB.
[2023-12-02 12:52:15,075 INFO L158 Benchmark]: TraceAbstraction took 260.65ms. Allocated memory is still 140.5MB. Free memory was 84.1MB in the beginning and 70.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-12-02 12:52:15,076 INFO L158 Benchmark]: Witness Printer took 5.47ms. Allocated memory is still 140.5MB. Free memory was 70.9MB in the beginning and 70.3MB in the end (delta: 569.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-12-02 12:52:15,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 357.11ms. Allocated memory is still 140.5MB. Free memory was 99.1MB in the beginning and 84.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 41.25ms. Allocated memory is still 140.5MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 36.49ms. Allocated memory is still 140.5MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 731.25ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 85.0MB in the end (delta: -4.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB.
* TraceAbstraction took 260.65ms. Allocated memory is still 140.5MB. Free memory was 84.1MB in the beginning and 70.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Witness Printer took 5.47ms. Allocated memory is still 140.5MB. Free memory was 70.9MB in the beginning and 70.3MB in the end (delta: 569.0kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45.
Possible FailurePath:
[L320] COND TRUE __VERIFIER_nondet_int()
[L321] CALL main1()
[L39] float IN = __VERIFIER_nondet_float();
[L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L34] COND FALSE !(!cond)
[L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L42] float x = IN;
[L44-L45] float result =
1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x;
VAL [IN=53, x=53]
[L47] COND TRUE !(result >= 0.0f && result < 1.399f)
VAL [IN=53, x=53]
[L48] reach_error()
VAL [IN=53, x=53]
- UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-12-02 12:52:15,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 12:52:17,072 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-12-02 12:52:17,140 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf
[2023-12-02 12:52:17,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 12:52:17,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 12:52:17,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 12:52:17,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 12:52:17,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 12:52:17,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 12:52:17,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 12:52:17,175 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-12-02 12:52:17,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 12:52:17,176 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-12-02 12:52:17,176 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-12-02 12:52:17,177 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-12-02 12:52:17,177 INFO L153 SettingsManager]: * Interval Domain=false
[2023-12-02 12:52:17,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 12:52:17,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-12-02 12:52:17,180 INFO L153 SettingsManager]: * sizeof long=4
[2023-12-02 12:52:17,180 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-12-02 12:52:17,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-12-02 12:52:17,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 12:52:17,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 12:52:17,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 12:52:17,183 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-12-02 12:52:17,183 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-12-02 12:52:17,183 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-02 12:52:17,184 INFO L153 SettingsManager]: * sizeof long double=12
[2023-12-02 12:52:17,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-12-02 12:52:17,184 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-12-02 12:52:17,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 12:52:17,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-12-02 12:52:17,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 12:52:17,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-12-02 12:52:17,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 12:52:17,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 12:52:17,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 12:52:17,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 12:52:17,187 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS
[2023-12-02 12:52:17,187 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-02 12:52:17,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 12:52:17,188 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 12:52:17,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-12-02 12:52:17,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 12:52:17,188 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5
[2023-12-02 12:52:17,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 12:52:17,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 12:52:17,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 12:52:17,507 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-12-02 12:52:17,507 INFO L274 PluginConnector]: CDTParser initialized
[2023-12-02 12:52:17,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:20,331 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-12-02 12:52:20,558 INFO L384 CDTParser]: Found 1 translation units.
[2023-12-02 12:52:20,559 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:20,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/b9a33a8b5/86e24cfda0d94444bf3fe8f6c88f9681/FLAGdde973ab6
[2023-12-02 12:52:20,889 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/data/b9a33a8b5/86e24cfda0d94444bf3fe8f6c88f9681
[2023-12-02 12:52:20,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 12:52:20,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 12:52:20,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 12:52:20,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 12:52:20,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 12:52:20,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:20" (1/1) ...
[2023-12-02 12:52:20,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b87c7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:20, skipping insertion in model container
[2023-12-02 12:52:20,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:20" (1/1) ...
[2023-12-02 12:52:20,942 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-12-02 12:52:21,126 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010]
[2023-12-02 12:52:21,133 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379]
[2023-12-02 12:52:21,178 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 12:52:21,195 INFO L202 MainTranslator]: Completed pre-run
[2023-12-02 12:52:21,213 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010]
[2023-12-02 12:52:21,215 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379]
[2023-12-02 12:52:21,246 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 12:52:21,265 INFO L206 MainTranslator]: Completed translation
[2023-12-02 12:52:21,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21 WrapperNode
[2023-12-02 12:52:21,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 12:52:21,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 12:52:21,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 12:52:21,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 12:52:21,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,318 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134
[2023-12-02 12:52:21,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 12:52:21,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 12:52:21,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 12:52:21,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 12:52:21,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 12:52:21,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 12:52:21,362 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 12:52:21,362 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-12-02 12:52:21,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (1/1) ...
[2023-12-02 12:52:21,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 12:52:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 12:52:21,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 12:52:21,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 12:52:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 12:52:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-12-02 12:52:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2023-12-02 12:52:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2023-12-02 12:52:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 12:52:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 12:52:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-12-02 12:52:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-12-02 12:52:21,533 INFO L241 CfgBuilder]: Building ICFG
[2023-12-02 12:52:21,536 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 12:52:24,101 INFO L282 CfgBuilder]: Performing block encoding
[2023-12-02 12:52:24,126 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 12:52:24,127 INFO L309 CfgBuilder]: Removed 2 assume(true) statements.
[2023-12-02 12:52:24,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:52:24 BoogieIcfgContainer
[2023-12-02 12:52:24,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 12:52:24,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 12:52:24,130 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 12:52:24,133 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-12-02 12:52:24,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:52:20" (1/3) ...
[2023-12-02 12:52:24,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698ba211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:52:24, skipping insertion in model container
[2023-12-02 12:52:24,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:21" (2/3) ...
[2023-12-02 12:52:24,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698ba211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:52:24, skipping insertion in model container
[2023-12-02 12:52:24,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:52:24" (3/3) ...
[2023-12-02 12:52:24,136 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_3a.c.cil.c
[2023-12-02 12:52:24,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 12:52:24,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-12-02 12:52:24,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 12:52:24,210 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@512b8983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 12:52:24,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-12-02 12:52:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-12-02 12:52:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2023-12-02 12:52:24,222 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 12:52:24,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-12-02 12:52:24,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 12:52:24,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 12:52:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1825724097, now seen corresponding path program 1 times
[2023-12-02 12:52:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 12:52:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177100321]
[2023-12-02 12:52:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 12:52:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-02 12:52:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 12:52:24,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-02 12:52:24,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-02 12:52:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 12:52:24,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-02 12:52:24,736 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 12:52:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 12:52:24,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 12:52:24,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 12:52:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177100321]
[2023-12-02 12:52:24,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177100321] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 12:52:24,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 12:52:24,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 12:52:24,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128136844]
[2023-12-02 12:52:24,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 12:52:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-02 12:52:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 12:52:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-02 12:52:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-02 12:52:24,783 INFO L87 Difference]: Start difference. First operand has 54 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 12:52:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 12:52:24,836 INFO L93 Difference]: Finished difference Result 104 states and 162 transitions.
[2023-12-02 12:52:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-12-02 12:52:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2023-12-02 12:52:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 12:52:24,848 INFO L225 Difference]: With dead ends: 104
[2023-12-02 12:52:24,848 INFO L226 Difference]: Without dead ends: 48
[2023-12-02 12:52:24,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-02 12:52:24,856 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 12:52:24,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 12:52:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2023-12-02 12:52:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2023-12-02 12:52:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.45) internal successors, (58), 41 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-12-02 12:52:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions.
[2023-12-02 12:52:24,900 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 6
[2023-12-02 12:52:24,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 12:52:24,901 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions.
[2023-12-02 12:52:24,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 12:52:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions.
[2023-12-02 12:52:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2023-12-02 12:52:24,903 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 12:52:24,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-12-02 12:52:24,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-02 12:52:25,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-02 12:52:25,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 12:52:25,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 12:52:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1825664515, now seen corresponding path program 1 times
[2023-12-02 12:52:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 12:52:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112140198]
[2023-12-02 12:52:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 12:52:25,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-02 12:52:25,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 12:52:25,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-02 12:52:25,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0443f78b-e111-4652-bd69-839b64d11592/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process